The length of this time is associated with the patient’s condition, if it is a pre-eclampsia, the bleeding will generally be clean for 3-5 days, because after the occurrence of pre-eclampsia, doctors generally have to routinely prescribe some medication to protect the fetus. In addition, the patient should be instructed to go home and rest in bed, bed rest is except for urination and defecation out of bed, other than in bed, after such treatment to protect the fetus, vaginal bleeding will slowly stop, about 3-5 days clean. However, the development of the embryo is a dynamic process, if the quality of the embryo itself is not very good, the birth control is sometimes not always effective, and the bleeding time will be prolonged. If the patient has stomach pain and bleeding with blood clots, it may indicate that the fetus can not be preserved, and the bleeding time may take 7-10 days. Generally, the bleeding will not stop until the embryo is completely aborted or until the patient goes to the hospital for examination and finds out that it is already an incomplete abortion, and the bleeding will not stop until the operation is done.